One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,8,12)(3,13,16,9)(4,10,5,6)(7,11,15,14)(34,37)(35,43)(36,46)(42,48)(1,3)(2,9)(4,11)(5,14)(6,15)(7,10)(8,16)(12,13)(17,18)(19,26)(20,23)(21,24)(22,25)(27,31)(28,29)(30,32)(33,34,39,37)(35,44,43,40)(36,47,46,41)(38,42,45,48)(1,4,8,5)(2,10,12,6)(3,11,16,14)(7,13,15,9)(17,19,22,24)(18,21,25,26)(20,28,30,27)(23,31,32,29)(33,35)(34,40)(36,45)(37,44)(38,46)(39,43)(41,48)(42,47)(1,5,8,4)(2,10,12,6)(3,14,16,11)(7,13,15,9)(17,18)(19,21)(20,23)(22,25)(24,26)(27,29)(28,31)(30,32)(33,36,39,46)(34,41,37,47)(35,45,43,38)(40,48,44,42)(1,6,8,10)(2,4,12,5)(3,15,16,7)(9,11,13,14)(17,20,22,30)(18,23,25,32)(19,27,24,28)(21,29,26,31)(33,37,39,34)(35,44,43,40)(36,47,46,41)(38,48,45,42)(1,7,8,15)(2,11,12,14)(3,10,16,6)(4,13,5,9)(17,21)(18,24)(19,25)(20,29)(22,26)(23,28)(27,32)(30,31)(33,38,39,45)(34,42,37,48)(35,46,43,36)(40,47,44,41)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.